microsoft/msquic

Miss check for the return value of CXPLAT_ALLOC_NONPAGED and CxPlatPoolAlloc

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#5,233 opened on Jul 10, 2025

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Area: TestingHowFound: MSRTriagedgood first issuehelp wanted

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Description

Description There are several instances in the codebase where the return value of CXPLAT_ALLOC_NONPAGED and CxPlatPoolAlloc is not checked before being used.

https://github.com/microsoft/msquic/blob/a6fe43d7928dc550b2f24599a2769df0358f963d/src/perf/lib/Tcp.cpp#L706-L707

https://github.com/microsoft/msquic/blob/a6fe43d7928dc550b2f24599a2769df0358f963d/src/core/unittest/RecvBufferTest.cpp#L55-L58

https://github.com/microsoft/msquic/blob/a6fe43d7928dc550b2f24599a2769df0358f963d/src/core/unittest/RecvBufferTest.cpp#L77-L79

https://github.com/microsoft/msquic/blob/a6fe43d7928dc550b2f24599a2769df0358f963d/src/core/unittest/RecvBufferTest.cpp#L78-L79

https://github.com/microsoft/msquic/blob/a6fe43d7928dc550b2f24599a2769df0358f963d/src/core/unittest/RecvBufferTest.cpp#L82-L84

https://github.com/microsoft/msquic/blob/a6fe43d7928dc550b2f24599a2769df0358f963d/src/platform/unittest/TlsTest.cpp#L588-L596

Suggested Fix Add a null check immediately after each CXPLAT_ALLOC_NONPAGED and CxPlatPoolAlloc call, and handle the failure case appropriately

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Research direction
Add null checks after each CXPLAT ALLOC NONPAGED and CxPlatPoolAlloc call in the specified files to handle allocation failures.
Tech stack
c
Domain
networkingbackend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
C
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75